William H. Dieterich

William Henry Dieterich (31 March 1876-12 October 1940) was a US Senator from Illinois (D) from 4 March 1933 to 4 March 1939, succeeding Otis F. Glenn and preceding Scott W. Lucas. He previously represented Illinois' at-large congressional district in the US House of Representatives from 4 March 1931 to 4 March 1933, succeeding Ruth Hanna McCormick and preceding Martin A. Brennan.

Biography
William Henry Dieterich was born near Cooperstown, Illinois in 1876, and he served as a US Army corporal during the Spanish-American War. He served as city attorney for Rushville from 1903 to 1907, treasurer of Rushville Union Schools from 1906 to 1908, and county judge of Schuyler County from 1906 to 1910, and he moved to Chicago in 1911 and then to Beardstown in 1912. From 1917 to 1921, Dieterich served in the State House of Representatives as a Democratic Party member. He served one term in the US House of Representatives before advancing on to the US Senate during the 1930s, also serving just one term. He died in Springfield in 1940.